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74AC191MTC датащи(PDF) 1 Page - Fairchild Semiconductor |
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74AC191MTC датащи(HTML) 1 Page - Fairchild Semiconductor |
1 / 10 page © 1999 Fairchild Semiconductor Corporation DS009940 www.fairchildsemi.com November 1988 Revised November 1999 74AC191 Up/Down Counter with Preset and Ripple Clock General Description The AC191 is a reversible modulo 16 binary counter. It fea- tures synchronous counting and asynchronous presetting. The preset feature allows the AC191 to be used in pro- grammable dividers. The Count Enable input, the Terminal Count output and the Ripple Clock output make possible a variety of methods of implementing multistage counters. In the counting modes, state changes are initiated by the ris- ing edge of the clock. Features s ICC reduced by 50% s High speed—133 MHz typical count frequency s Synchronous counting s Asynchronous parallel load s Cascadable s Outputs source/sink 24 mA Ordering Code: Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code. Logic Symbols IEEE/IEC Connection Diagram Pin Descriptions FACT is a trademark of Fairchild Semiconductor Corporation. Order Number Package Number Package Description 74AC191SC M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body 74AC191SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74AC191MTC MTC16 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 74AC191PC N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide Pin Names Description CE Count Enable Input CP Clock Pulse Input P0–P3 Parallel Data Inputs PL Asynchronous Parallel Load Input U /D Up/Down Count Control Input Q0–Q3 Flip-Flop Outputs RC Ripple Clock Output TC Terminal Count Output |
Аналогичный номер детали - 74AC191MTC |
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Аналогичное описание - 74AC191MTC |
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